240 likes | 453 Views
Animation. Lecture 8 Razia Nisar Noorani. Animation. The rapid display of a sequence of images of 2-D or 3-D artwork or model positions in order to create an illusion of movement. Relies on persistence of vision to create the illusion of movement. Persistence of Vision.
E N D
Animation Lecture 8 RaziaNisarNoorani
Animation • The rapid display of a sequence of images of 2-D or 3-D artwork or model positions in order to create an illusion of movement. • Relies on persistence of vision to create the illusion of movement.
Persistence of Vision • In the early 1800’s, the phenomenon known as persistence of vision gave mankind the first glimpse into the modern world of animation. • Persistence of vision refers to the way our eyes retain images for a split second longer than they actually appear, making a series of quick flashes appear as one continuous picture.
Persistence of Vision • Using a flipbook, you can see the persistence of vision effect in action. • If you have a different sequential drawing on each page of the flipbook and you flip through the pages rapidly, the drawings appear to move. • Examples of Early Animation
TraditionalAnimation Also called cel animationor hand-drawn animation. • Begins with a storyboard. • A preliminary soundtrack is recorded. • Penciled drawings are made by lead animators of keyframes. • Pencil tests are prepared. • Artists called in-betweeners draw the frames between the keyframes. • The drawings are traced onto cels and painted. • Finally, they are photographed.
What is Cell Animation? • Method used for creating hand-drawn animation. • Individual frames are drawn in a sequence that, when played back quickly (usually 10 to 30 frames per second), creates the illusion of continuous movement.
What is Cell Animation? • Animators drew on semi-transparent sheets of vellum, or acetate cells (cellulose acetate) - they could see through the frame they were drawing to the previous frames.
What is Digital Animation • Electronically generated movement of anything on your computer screen. • Three different levels of digital animation: • Basic • Intermediate • Advanced
What is Digital Animation • Basic • At the most fundamental level, animation consists of simple transitions (wipes and dissolves between PowerPoint slides, for example) and path animations (moving text and logos).
What is Digital Animation • Intermediate • The next level up is cel animation (the method used in cartoons) and special effects, which include all manner of distortions and color effects applied to a graphic, photo or movie.
What is Digital Animation • Advanced • The most sophisticated level of digital animation is 3D animation. Movies such as "Toy Story" and "A Bug's Life" are the most prominent examples of what can be achieved through the latest computer technology. • Ambitious designers can take advantage of these same tools to manufacture some dazzling 3D creations of their own.
The computer is used to make the animation process quicker and easier. Usually involves 2-D images Can be hand-drawn and scanned into the computer. Can be drawn directly into the computer using graphics tablets. The images are positioned into keyframes containing the most important movements. Tweening is then performed by the computer to create images between keyframes. ComputerAssistedAnimation
ComputerAssistedAnimation • Even though computers are now used extensively, many traditional steps are still used. • Storyboarding • Pencil Testing • Keyframes • Tweening
ComputerGeneratedAnimation • All images, objects and animation are created on the computer. • Typically uses 3-D images. • Adds two steps to the animation process. • Modeling – process of creating a wireframe structure of the 3-D objects and scenes. • Rendering – process of applying colors, textures, shadows, transparency, etc. to create the final image or animation.
3-D Graphics and Animation • 3-D animations are more complex. • Creating 3-D animations involves modeling, animation, and rendering. • Modeling is creating broad contours and structure of 3-D objects and scenes. • Animation is determining the motions of the objects. • Rendering involves determining colors, surface textures, and amounts of transparency of objects.
ComputerGeneratedAnimation • Motion capture can be used to create animation. • Actors wear special suits that allow the computer to capture their movements. • The movements can then be applied to computer-generated graphics. • Examples: • The Polar Express • Avatar
BridgingtheTraditionalandComputerEras • Traditional animation is defined as the process of creating the illusion of motion by viewing a series of individual drawings successively. • Computer animation is creating a digital scene by digitally recording cells, sorting them on an electronic storyboard, and displaying them electronically in succession.
Review History of Animation • Animation • Traditional Animation • Computer Assisted Animation • Computer Generated Animation